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Cognitive function and psychological well-being: findings from a population-based cohort
David J Llewellyn1, Iain A Lang, Kenneth M Langa
1Department of Public Health and Primary Care, Forvie Site, University of Cambridge, Cambridge CB2 2SR, UK. dl355@medschl.cam.ac.uk
Age and Ageing
|October 15, 2008
Summary
Higher psychological well-being is linked to better cognitive function in adults over 50. This study explored the connection between mental wellness and cognitive performance in older populations.
Area of Science:
- Gerontology
- Cognitive Psychology
- Public Health
Background:
- Depression is known to impair cognitive function.
- The specific relationship between psychological well-being and cognitive function remains less understood.
- Investigating this link is crucial for understanding factors influencing cognitive health in aging populations.
Purpose of the Study:
- To examine the association between psychological well-being and cognitive function levels.
- To determine if higher psychological well-being correlates with better cognitive performance.
Main Methods:
- A nationally representative, population-based cohort study.
- Included 11,234 non-institutionalized adults aged 50+ from the English Longitudinal Study of Ageing (2002).
- Psychological well-being (CASP-19) and cognitive function (neuropsychological tests) were assessed; linear regression modeled the relationship.
Main Results:
- Individuals in the highest quintile of psychological well-being scored 0.30 SD higher on a global cognitive score than the lowest quintile.
- This association persisted after adjusting for depressive symptoms, sociodemographics, physical health, and health behaviors.
- The positive link between psychological well-being and cognitive function was consistent across genders and all cognitive domains.
Conclusions:
- Higher psychological well-being is significantly associated with better cognitive function in community-dwelling older adults.
- This finding highlights the importance of promoting psychological well-being for maintaining cognitive health in aging.
- Psychological well-being may be a key factor in preserving cognitive abilities throughout later life.
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